import java.lang.reflect.Array;
import java.util.Arrays;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 30318
 * Date: 2023-05-17
 * Time: 18:08
 */
class A{
    A(){
        this(10);
    }
    A(int a){

    }
    public static void hello(){
        //static int a = 10;
        System.out.println("hello");
    }
}
public class Test {
    static boolean flag;

    public void func(){

    }

    public static void main(String[] args) {
        int[] array = {1,2,3};
        System.out.println(Arrays.toString(array));

        Test test = new Test();
        test.func();

        /*System.out.println(flag);
        System.out.println(Test.flag);*/
    }

    public static void main1(String[] args) {
        A a = null;//a这个引用 不指向任何对象
        a.hello();
        A.hello();
    }
}
